Cushion|Natural|GIA

1.29ct J SI1 Cushion Natural Diamond

VG • J/SI1 • GIA 5156114666

Certificate GIA 5156114666

Diamond specifications and retailer prices

From £2,808 GBP
$3,762 USD
As of October 31, 2026
Save £1,731 GBP (38%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £5,881 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.29ct natural cushion diamond

This 1.29ct natural cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 5156114666. Listed at 21 retailers as of October 31, 2026, with a 62% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.29
Carat
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5156114666
Dimensions6.23 × 5.68 × 3.96 mm
L/W Ratio1.10
Top View
6.23 mm5.68 mm1.29 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateGIA 5156114666
Side View
Table 61.0%CrownGirdle: THN-EXTPavilionCulet: NoneDepth 69.7%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £5,881 GBP|Low: £2,573 GBP|High: £5,952 GBP|Avg: £3,685 GBP|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 11£2,808 GBP
Retailer 6£2,870 GBP
Retailer 7£3,088 GBP
Retailer 3£3,168 GBP
Retailer 9£3,345 GBP
Retailer 10£3,538 GBP
Retailer 2£3,672 GBP
Retailer 8£3,722 GBP
Retailer 5£3,927 GBP
Retailer 4£4,539 GBP
MOH London£5,881 GBP

43 data points across 11 retailers

21 retailers£2,808 GBP to £4,539 GBP

B
Cheapest Retailer
-
£2,808 GBP
$3,762 USD
B
Retailer 2
-
£2,870 GBP
$3,845 USD
View
B
Retailer 3
-
£2,885 GBP
$3,866 USD
View
B
Retailer 4
-
£2,944 GBP
$3,944 USD
View
B
Retailer 5
-
£2,951 GBP
$3,954 USD
View
B
Retailer 6
-
£3,088 GBP
$4,137 USD
View
Final sale: no returns
B
Retailer 7
-
£3,159 GBP
CA$5,879 CAD
View
B
Retailer 8
-
£3,168 GBP
$4,245 USD
View
B
Retailer 9
-
£3,170 GBP
$4,248 USD
View
B
Retailer 10
-
£3,345 GBP
$4,482 USD
View
B
Retailer 11
-
£3,538 GBP
$4,740 USD
View
B
Retailer 12
-
£3,644 GBP
$4,882 USD
View
B
Retailer 13
-
£3,672 GBP
View
Retailer 14
-
£3,722 GBP
A$7,673 AUD
View
Price last confirmed 23 days ago
C
Retailer 15
-
£3,762 GBP
$5,040 USD
View
C
Retailer 16
-
£3,762 GBP
$5,040 USD
View
C
Retailer 17
-
£3,888 GBP
$5,210 USD
View
B
Retailer 18
-
£3,927 GBP
€5,011 EUR
View
Retailer 19
-
£4,077 GBP
$5,463 USD
View
Price last confirmed 9 days ago
B
Retailer 20
-
£4,539 GBP
ZAR 98,248 ZAR
View
Most Expensive
MOH London
889CBE4E8 · Nov 1
£5,881 GBP
View
Price under review
20 more retailers have this diamond
Prices start from £2,808 GBPSave up to £1,731 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B
1.29ct Cushion
£2,808 GBP